Hand-stamp



(No Model.) 2 Sheets-Sheet 1.

B. B. HILL.

HAND STAMP.

4N0 315,285 Patented Apr; 7, 1885.

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WITNBssBs: INVBNTOR 2 ShetS- Sheet 2.`

(N Model.)

B. B. HILL.

HAND STAMP.

' `Bamvea Apr. 7,1885.

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IlNnuin STATES PATENT OFFICE.' j

BENJAMIN B. HILL, OF PHILADELPHIA, PENNSYLVANIA.

HAND-STAMP.

SPECIFICATION fcrming part of Letters Patent No. 315,285, dated April 7, 1885.

Application filed December 3, 1BRS. (No mdel.)

i inHand-Stamps, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to an improvement in that class of hand-stamps yknown as selfinkers,77 such as are shown in my Patent No. 232,349; and it consists in the peculiar construction and arrangement of parts, hereinafter described and claimed, whereby such stamps are much more cheaply manufactured and more convenient in use when made.

In the accompanying drawings, which show what I consider the preferable way of carry-` ing out my invention, Figure 1 shows a side elevation of my stamp in its normal position; Fig. 2,-a vertical longitudinal section of the same when giving an impression. Fig. 3 shows a vertical cross-section through theline a: m of Fig. 2, with the i'nking-pad removed. Fig. 4. is a similar section through line z z in same gure, and Fig. 5 is a similar section through the line y y in same gure. Figs. 6 and 7 are modifications.

As shown in the drawings, the frame of the machine consists of the cross-piece A, sides B B', and braces C, one side, B, being provided with the usual slot, D, in which works one of the trunnions, E, connecting the dieplate F (carrying the xed inscription-plate f) with the yoke G. The Vother side, B', has a slot o'f peculiar construction having one fixed side and one partly movable, which movable part is formed' of a swinging lever, H, hung upon a pivot, h, near the top of the side B', which lever carries the pin h' and is held in its normal position by the spring or elastic block I, set in a recess in the corner of the side B'. Both lever and spring are held in place by the end of the ink-pad J, which is covered, in the usual manner, by some absorbent material, as K, totake the ink. The cross-piece A is recessed to receive the inkpad and the upper ends of the sides B, which are formed with tenons or projections b, as

shown, so as to leaveshoulders b', on which the flanges a of the cross-piece A rest, which flanges are riveted, screwed, or otherwise fastened to the tenons or projections b, as shown.

i At the end of the die-plate F is cast or otherwise secured the-yoke L, having a slot, Z, in which works the pin h' on the lever H.

At M is shown the type-receptacle, which is secured on the die-plate F, by rivets or in any suitable manner, over the ,slot or aperture in the latter through which the type is inseted. In this type-receptacle is placed` a` spring, N--such as is shown in my patent above referred to-or any equivalenttherefor, and also a plate, O, against which bear two adjusting-screws, P, one atreach end of` said plate, which screws pass through holes tapped in the top of the receptacleM.

In lieu of the plate and screws shown, I 7o sometimes employ a series of screws, one for each type, as shown in dotted lines in Fig. 2, as, owing to the irregularity of rubber type, itl is sometimes necessary to 'adjust' them with respect to each other.

When in its normal position the stamp appears as in Fig. 1, with the fixed inscriptionplatein contact with the ink-pad J; but when pressure is applied on the handle the plate is pushed down, and as the trunnion E comes in contact with the projection on the lever H it pushes the lever to one side, thus making the slot sufficiently wide to allow the trunnion' E to pass, and at the same time carrying the pin 'h to one side, where it becomes the means of turning the plate, as shown in Fig. 5, and then as the plate pursues its downward course it nally assumes the position shown in Figs. 2 and 3, where it is represented as giving its impression, because the spring I moves the lever H to its normal position, thus carrying the pin h to the centerof the side B', `where it acts as a guide to keep the die-plate horizontal during the time it is making the last part of its downward -motion and giving its impression. As soon as the pressure of the handle is relieved the reverse movement takes place` and the die-plate returns to its original position.

Should it be desired to print upon an unicc;

tion act as a brake to a considerable extent,

' claimed, as it is evident that it may be coneven surface, the side of the stamp opposite the spring I is arranged to bear on the highest side'of the object to be printed, and the spring will yield sufficiently to give a good impression.

Besides the advantage of printing on uneven surfaces, this arrangement of the lever has a further advantage due to the spring, which is as follows: rlhis style of stamp is generally used with sufticient rapidity to give considerable momentum to the die-plate, causing it to flop77 as it turns over, and, as there is necessarily considerable play of the parts to enable the die-plate to move easily, the groove, 8m., soon becomes worn, for the momentum of the die-plate as it turns over soon makes a deep impression in the side of each slot where the trunnions comein contact with it, as there is nothing to take up the backlash; but the spring and lever in my present invenand thus the destructive momentum of the die-plate is avoided, and the motion of the latter is easy, even, and without undue friction, whereby it Wears much longer than without the spring.

I deem it important that the cross-piece and sides be so connected that the former rests on the latter, and thus receives all the force of the blow and relieves the screws or rivets from all strain caused by the striking of the object to bevstamped. I also deem the use of the spring N and the adjusting-screws as important eoactors with each other, because either type can be adjusted'by the screws without loosening set-screws, as is necessary when the types are secured in place by other means than springs.

I do not wish to limit myself to the exact construction shown, except where especially si'derably changed without departing from the spirit of my invention-for instance, a stiff wire attached to the die-plate and passing through a turning-eye on the lever may be substituted for the yoke and iixed pin shown in Fig.V 7; and I should consider such a device the equivalent of my yoke and pin.

What I claim as new is- 1., In a self-inking hand-stamp having a tilting die, a frame having a slot for the passage of one of the trunnions, a portion of one side of the frame forming the slot constructed to move laterally in said slot to allow of the passage of the trunnion, and to be substantially flush with the inner face of said side of the frame, in combination with a stud on such movable portion, and a guide attached to the tilting die and operating in connection with said stud, substantially as described.

2. The combination, with a hand-stamp provided with a permanent inscription-plate and a receptacle for movable type, of a plate, O, and screws P, passing through the bottom of said receptacle, for adjusting the face of the type to the sameplane as the inscriptionplate, independent of the handle, substantially as described.

3. The combination, with the frame of a hand-stamp having slotted sides, and a dieplate having an apertured yoke, L, of the le-V ver H, pivoted to the side of the frame and carrying the pin h, working in the aperture inthe yoke L, and an actuating-spring, I, bearing on an arm of said lever, constructed and arranged substantially as herein set forth and described. f 4. The combination, with a type-receptacle provided with a spring for securing the type in place, of adjusting-screws passing throughY the bottom of said receptacle, and constructed and arranged to adj ust the position of the type lengthwise, substantially as described.

5. The combination, with a type-receptacle and the spring N, of the plate O and the ad'- justing-screws P, substantially as described.

In testimony whereof I affix my signature, in presence ot' two witnesses, this lst day' of December, 1883. i

BENJAMIN B. HILL.

lVitnesses:

WILLIAM S. TOLAND, Guns. W. MILLER. 

